低温条件下二氧化碳存在时羰基硫催化水解本征动力学
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摘要: 在自行设计和安装的一套微反-色谱联用装置上，以TGH为催化剂，进行了二氧化碳对羰基硫催化水解本征动力学影响的研究，得出了在低温50 ℃～70 ℃、高水汽摩尔比(H2O/COS=60～550)，分别对原料气中有无存在CO2的条件下,采用非线性Marquart法对实验数据进行回归，所建立的本征动力学方程式为：Abstract: A microreactor-GC apparatus has been used for studying COS hydrolysis reaction kinetics over TGH catalyst. The intrinsic reaction kinetics of COS hydrolysis over a TGH catalyst was investigated in the temperature range of 50 ℃～7 ℃, H2O/COS molar ratio of 60～550 with the presence of CO2. Nonlinear Marquart Regression was employed to analyze the experimental data. The reaction kinetics are expressed as follows: The kinetic model can be interpreted the reaction in terms of mechanism. The presence of CO2 seems not to change rate constant and activation energy of COS hydrolysis reaction.
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Key words:
- COS hydrolysis /
- reaction kinetics /
- lower temperature /
- CO2
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